Carbureter.



A. D. ELLIOTT.

GARBURETER.

'APPLIOATION FILED AUG. 4, 190a.

' Patented Deb.28,1909.

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A. D. ELLIOTT.

CARBURETEB.

APPLICATION FILED AUG. 4, 1908.

944,482. Patented Dec.28, 1909.

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ALEXANDER DAYTON ELLIOTT, OF VTOLA, ILLINOIS.

CARBURETER.

Specification of Letters Patent.

Patented Dec. 28, 1909.

Original application filed December 21, 1907, Serial No. 408,750.Divided and this application filed August 4, 1968. Serial No. 446,991.

To all whom it may concern:

Be it known that I, ALEXANDER 1). EL- LIOTT, a citizen of the UnitedStates, residing at Viola, in the county of Mercer and State ofIllinois, have invented a new and useful Carbureter, of which thefollowing is a specification.

This invention relates to devices of that class employed for carburetingair and enriching gas, and has for its principal object to provide animproved form of carbureter to which measured quantities of gasolene orother hydro-carbon are fed at intervals determined by the rate of gasconsumption, the supply of hydro-carbon being entirely automatic.

A further object of the invention is to provide an improved form fcarbureter in which the carburetor casing is mounted on a scale beam andis so arranged that the supply of gasolene or other hydro-carbon iscontrolled by the variation in weight of the gasolene in the carbureter.

with these and other objects in view, as will more fully hereinafterappear, the invention consists in certain novel features of constructionand arrangement of parts, hereinafter fully described, illustrated inthe accompanying drawings, and particularly pointed out in the appendedclaims, it being understood that various changes in the form,proportions, size and minor details of the structure may be made withoutdeparting from the spiritor sacrificing any of the advantages of theinvention.

In the accompanying drawings :-F igure 1 is a front elevation of acarbureting apparatus constructed in accordance with the invention. Fig.2 is a side elevation of a carbureter casing and a scale beam on whichit is mounted. Fig. 3 is a vertical section through the carbureter. Fig.4 is a detail perspective view of one of the absorbent portions of thecarbureter detached. Fig. 5 is an elevation partly in section, of thevalve mechanism which controls the flow of gasolene from the supply tankto the carbureter. Fig. 6 is a transverse section of the same on theline 66 of Fig. 5. Fig. 7 is a vertical section of the cylinder and311mger which control the movement 0 the gasolene supply valve. Fig. 8is a side elevation of the same the plunger guide being shown insection. Fig. 9 is a view partly in elevation and partly in section ofthe [complete carbureting apparatus including the air pump and thevarious pipe connections. Fig. 10 is a sectional elevation of the valvemechanism for controlling the movement of the air pump. Fig. 11 is atransverse sectional View of the same.

Similar numerals of reference are employed to indicate correspondingparts throughout the several figures of the drawmgs.

The present application is a division of an application for LettersPatent for air pumps for carbureters filed by me on December 21, 1907,Serial No. 408,7 50.

The bars 12 of the frame of the apparatus support an annular liquid tank19, which forms a seal for the open lower end of the movable bell of anair pump. To the central portion of the bell is secured a piston rod 21,extending from a piston 22 that is located in a vertical cylinder 23, towhich the oil under pressure from a tank 16 is admitted by a pipe 24,and when the oil enters the lower portion of the cylinder, the pistonwill be forced up raising the bell 20, whereupon atmospheric air willflow in to the bell through a suction lift valve 25 of any ordinaryconstruction. The bell is sufliciently weighted to descend and force theair outward from the bell through a pipe 26, and this pipe extendsupward through a containing tank 27 of an aerometer having a movablebell 28, the upper portion of the pipe 26 being provided with a valve 29which opens to admit the air to the aerometer 28, and closes when thepressure in the aerometer exceeds that in the bell 20 of the pump.Leading from the aerometer is a discharge pipe 30 through which the airpasses to the carbureting chamber in the manner hereinafter described.

The flow of the oil or other fluid under pressure from the tank 16 tothe cylinder 23 is under the control of a valve 32, see Figs. 10 and 11.The valve 32 is in the form of an ordinary D valve controlling threeports 33, 34 and 35, and is disposed within a suitable casing 36.Journaled in the upper portion of the casing is a rock shaft 37 to oneend of which is connected an arm 38 that works loosely in a recessformed in the upper face of the valve 32. To this shaft is secured a twoarmed lever 39, and mounted loosely on the shaft is a lever 40 and agear segment 41, the lever 40 being provided at its free end with aWeight 42 and carrying a projecting pin 43, adjacent its pivotal point,said pin being arranged to engage alternately with the arms of thelevel. 39. The gear segment 41 has a pair of projecting pins 44 whichare arranged to engage with a lug 45 projecting from the rear face ofthe lever 40, and as the gear segment is moved in one direction or theother, one of the pins 44 will, by engagement with the lug 45, carry thelever 40 up to and across the vertical plane of the rock shaft 37, sothat said lever may then continue its movement in the same direction bygravity, bringing the pin 43 of the lever into engagement with one orother of the arms of the lever 39, and thus quickly and positivelyshifting the position of the valve 32.

The valve mechanism is carried by a bracket 48 in the upper portion ofwhich is journaled a shaft 49 carrying at one end a pinion 50 thatmeshes with a tooth of the gear segment 41, and at the opposite end ofsaid shaft is a sprocket wheel 51, around which passes a link belt 52,the upper portion of the link belt being guided around an idler sprocket53 at the upper portion of the frame.

Projecting from the linkbelt 52 is an arm 54 that is firmly secured tothe movable bell 20 of the air pump, so that as said bell moves up anddown, the link belt ill be turned in one direction or the other for thepurpose of shifting the valve 32.

Leading from the lower portion of the tank 16 is a pipe 56 having acont-rolling valve 57, and which is connected to two pipes 58 and 59,the pipe 59 leading upward and being connected to a pressure gage 60,while the pipe 58 leads upward and communicates with the port 33 of thevalve casing 36. Leading from the port 35 of the valve casing 36 is thepipe 24, which communicates with the lower end of the cylinder 23, aspreviously described.

Leading from the central port 34 of the valve casing is a pipe 3 whichforms the exhaust from the cylinder and leads into the tank 15.

In starting the machine into operation, tank 15 is filled with anysuitable liquid, preferably a heavy oil, and below this tank is a secondtank 16- into which the oil is forced from the tank 15 through a pipe17, a pump 18 being preferably employed for this purpose. The pump 18 isfurther utilized as an air pump, so that after the entire contents ofthe tank 15 have been drained into the tank 16, air may be forced intosaidtank 16 in order to place the liquidunder pressure.

The parts above described constitute no part of the present invention,but have merely been shown and described for thet purpose of giving abetter understanding ofthe operation of the carbureter herein afterdescribed. The operation of these parts is as follows :lVith the'valve32 in the position shown in Fig. 10 the oil or other liquid underpressure will flow upward through the pipe 58 into the valve chamber,and acting on the upper face of the valve 32 will hold the latter firmlyto its seat. During this time the bell. 20 of the air pump isdescending, and is forcing air into the bell 28 of the aerometer. As thebell 2O descends, it carries down the chain or belt 52 through theconnecting arm 54, and this movement is transmitted to the sprocketwheel 51, thereby turning the pinion 50 and gear segment 41. As thesegment 41 is moved to the left of Fig. 10, the pin 44 at the right ofsaid segment will engage a lug 45 of the lever 40 and will carry thelever 40 up to and beyond the vertical plane of the axis of the shaft37, whereupon the weight 42 of the lever will carry the same downwardand the pin 43 of said lever will engage with one of the arms of thetion as to uncover the port 35. The oil under pressure then flows frompipe 58 through the port 35, and pipe 24 to the cylinder 23, and thepiston 22 will thereupon the air pump, so that air will be sucked inthrough the valve 25, while the valve 29 at the discharge end of thepipe 26 will be closed by the pressure in the aerometer bell. As thebell 20 moves up, it will carry with it the link belt 52, and the valvemechanism rection, shifting the valve 32 to theposition shown in Fig. 10and when this occurs the lower end of the cylinder 23' is placed incomn'iunication with the tank 15 through the pipe 24, port 35, the valvecavity, port 34, pipe 63. The weight of the bell then causes descendingmovement, and the liquid will be forced out of the cylinder 23 into thetank 15, from whence it maybe afterward pumped into the pressure tank.

The carbureter constituting the present invention is shown at in theformof an approximately rectangular casing within which are arranged aplurality of horizontally disposed partitions 71 on each ofwhich rests aforaminous frame 72 of inverted V- shape in cross section. Thesepartitions extend alternately from the ends of the casing so as to forma tortuous passage for the air to be carbureted, the air entering at thebottom and following the tortuous passage and escaping at the top of thecasing. Each of the frames 72- is formed of foraminous materialthoroughly wrapped with an absorbent formed of wicking or like material1 which will become thoroughly saturated with the gasolene or otherenriching agent. i From the bottom of the. carbureterca sing lever 39,shifting the valve 32 to such posibe forced up and will raise the bell20-of' will be thereupon moved in the reverse didepends an open bottominlet tube 73 that dips into a small annular tank 7 1 that is filledwith oil or other liquid, and extending up into this inlet tube is theupper end of the air supply pipe 30. The top of the pipe 30 is disposedabove the level of the liquid so that the latter will form a sealwithout interfering with free vertical movement of the carburetercasing.

At the upper portion of the main frame is secured a plate 75 to theinner face of which is fastened a hollow bracket or casing 70 from whichdepends an open bottom tube 77 that surrounds a discharge tube 78leading from the top of the carbureter. The tube 77 is surrounded by asmall annular tank '7 9 that is carried by the top of the carburetercasing, and is filled with oil or other heavy liquid so that thecarbureter tank may move freely in a vertical direction withoutinterfering with the flow of the air and gas. The gas passes upwardthrough the tube 78 into the hollow casing 76 and thence out wardthrough a service pipe 180 to the point of consumption.

Secured to the plate T5 or arranged at any other convenient point a tank82 containing gasolene or other hydrocarbon and from which thecarbureter casing is supplied. At the front of the tank is a plate 83having three ports 84, 85 and 86 which are under the control of a rockervalve 87 that is carried by a stem 88 and is pressed against its seat bya spring 89. T hefront of the plate has an annular groove 90 withinwhich is seated the edge of a cup shaped casing 91 that preferably isformed of glass and is closed tightly in place by a screw 92 passingthrough a yoke 93 that projects from the plate. This casing 91constitutes a measuring vessel which is filled with gasolene from thetank, and after being filled discharges its contents into thecarbureter, the arrangement being such that only a single charge can beemptied into the carbureter at one operation, and danger of flooding thecarbureter is, therefore, avoided.

The rear end of the valve stem 88 carries a rocker arm 94: which isconnected by a rod 95 to a plunger 90 working within a cylinder 97disposed below the carbureter. The lower end of the cylinder 97communicates with the pipe 61 which is a branch of the pipe 24- and flowof liquid through the cylinder is under the control of the automaticmechanism heretofore described whereby there is always a supply ofliquid under pressure in readiness to lift the plunger. The downwardmovement of the plunger to initial position is assisted by a tensionspring 98 that surrounds the rod 95 one end of the spring beingconnected to the rod and the 84L is closed and the ports 85 and 86 areopen (Fig. 5). The port 8 1 communicates with the lower portion of thegasolene supply tank, while leading from the port 85 is an air vent tube99 leading to the upper portion of the gasolene tank. If the rocker arm9% is moved upward by the admission of liquid under pressure to thelower portion of the cylinder 97, the valve will be rocked for thepurpose of opening the port 81 and closing the port 86, this latter portcommunicating with the upper portion 01" the gas escape pipe 7 8 througha pipe 100. The gasolene will then flow in through port 84L from thetank, the air meantime escaping from the measuring vessel through theport 85 until the measuring vessel 91. is filled. If the liquid underpressure is then allowed by the action of valve 32 (Fig. 10) to escapefrom the lower end of the cylinder 97 the spring 98 will pull down therod 95 and the port 84: will be closed and port 86 opened so that themeasured quantity of liquid in the chamber 91 is free to flow into thecarbureter, and this liquid will strike against the uppermost of theframes 72 and will be gradually distributed through the carburetor untilcomplete saturation is effected.

V hen used in connection with the pumping and valve mechanismshereinbefore described, the operation of pouring a measured quantity ofgasolene into the carbureter will be accomplished each time the air pumpis operated unless the carbureter contains a sufficient quantity ofgasolene to render a fresh supply unnecessary.

To the opposite ends of the carbureter casing are secured metal strips102, the upper ends of which flare outward and are slidably connected tostationary longitudinally slotted guides 103 which serve to maintain thecarbureter casing in a practically constantly vertical plane. The lowerends of the arms 102 are provided with knife edge fulcrums 104: thatrest in notches formed in scale beams 106 that are pivoted on a rod 107which serves also as a means for connecting the scale beams to eachother. The opposite arms of the scale beams are provided with poises 109which may be adjusted toward and from the fulcrum point for the purposeof altering their effective force. Under normal conditions, the weightof gasolene, together with the weight of the carbureting chamber willmore than counterbalance the poises, and that end of the scale beamwhich supports the carbureter will. be moved down to the lowestposition.

The carbureter carries a rod 110, the lower end of which is connected toa catch or trigger in the form of a bell crank lever 111 that is pivotedon the plunger rod guiding frame 112. This catch is arranged to engagewith the enlarged head of the plunger 96, and hold the same from upwardmovement under the pressure of liquid entering the lower end of thecylinder 97, and the parts will remain in this position so long as y theweight of gasolene in the carbureting charged when the plunger againdescends as previously described. If the one charge is not sufficient tomove down the scale beams against the action of the counterpoises thecatch 111 will not be allowed to move to locking position and when theplunger is again elevated another charge will flow into the measuringvessel to be discharged into the carbureting chamber when the plungeragain descends.

lVhat is claimed is 1. In combination, a carbureter casing, acounter-balanced scale beam supporting the same, a gasolene supplyvalve, means for operating the same, and means under the control of thecasing for locking the valve operating means.

2. In combination, a carl'un'eter casing, a counterbalanced scale beamsupporting the same, a gasolene supply valve, a piston and cylinder foractuating said valve, a catch for engaging and locking the piston frommovement, and means connecting said catch to the carbureter casing.

' 3. In combination, a vertically movable carbureter casing, acounter-balanced scale beam supporting the same, a gasolene supplyvalve, a cylinder, a plunger or piston arran ed therein and o aeratinsaid valve a bell crank lever, one arm of which is arranged to engagewith and lock the piston or plunger from movement, and a linkronnectingthe opposite arm of said bell crank lever to the casing. Y

4:. In combination, a carbureter, a gasolene supply tank, a measuringcasing in communication with the tank and the carbureter,

4 and a valve mechanism controlling the flow of gasolene from the tankto the casing and from the casing to the carbureter, said valvemechanism being controllable by the weight of gasolene in thecarbureter.

In combination, a vertically movable carbureter, a counter balancingtherefor, a gasolene supply tank, a measur ing casing communicating withthe tank,

and a oarbureter, a rock shaft, a valve carried thereby and controllingthe inflow of gasolene to the casing and its discharge therefrom, avalve actuating member, and a valve locking device controllable by thevertical movement of the carbureter.

6. In combination, a vertically movable carbureter casing, acounter-balancing means therefor, a gasolene supply tank, a measuringcasing having a pair of ports communi eating one with the lower portionof the tank and the other with the upper portion thereof, a dischargeport leading from the casing to the carbureter, a rock shaft or stemextending into the casing, a spring pressed valve carried by said shaft,a fluid pressure cylinder, a plunger disposed therein and connected tothe rock shaft, a spring for moving the rock shaft in one direction, abell crank lever engaging said plunger, and means for connecting saidbell crank lever to the carbureter. V

In testimony that I claim the foregoing as my own, I havehereto affixedmy signature in the presence of two witnesses.

ALEXANDER DAYTON ELLIOTT.

lVitnesses GRAN R. LARRABEE, J M. HUPP.

